Although jQuery itself cannot directly modify the web page title, the same effect can be easily achieved using pure JavaScript. The following JavaScript code snippet can modify the full title of the current web page (i.e. the title displayed in the browser title bar):

document.title = '新的標題';

FAQs (FAQs) on using jQuery to modify page titles

How to use jQuery to modify the title of a specific page?

To use jQuery to modify the title of a specific page, use the document.title attribute. This property allows you to get or set text in the title bar. Here is a simple example:

$(document).ready(function(){
  document.title = "新的頁面標題";
});

code, "New Page Title" is the new title you want to set. This code should be placed inside the <script></script> tag in the HTML file.

How to use jQuery to dynamically modify page title?

Yes, you can use jQuery to dynamically modify the page title. This is useful in situations where titles need to be updated based on user interaction or other events. For example:

$(document).ready(function(){
  $('#button').click(function(){
    document.title = "新的頁面標題";
  });
});

In this code, when the user clicks on an element with id "button", the page title will be changed to "New Page Title".

Can I use jQuery to modify the title of an external page?

No. Due to the limitations of the same-origin policy, jQuery cannot modify the title of the external page. Homogen policies are the key security mechanism for isolating potentially malicious documents.

Can I use jQuery to modify the title of a specific browser tab?

Yes, the document.title property changes the title of the current document, which is displayed in the browser tab. For example:

$(document).ready(function(){
  document.title = "新的標簽頁標題";
});

code, "New Tab Title" is the new title you want to set.

How to restore to the original title after modifying the title using jQuery?

Before modifying the title with jQuery, you need to store the original title in a variable. For example:

$(document).ready(function(){
  var originalTitle = document.title;
  document.title = "新的頁面標題";
  // 恢復(fù)到原始標題
  document.title = originalTitle;
});

code, the original title is stored in the originalTitle variable. This variable can then be used to restore to the original title.

Can I use jQuery to modify the page title according to specific conditions?

Yes, you can use jQuery to modify the page title according to specific conditions. For example:

$(document).ready(function(){
  if (condition) {
    document.title = "新的頁面標題";
  }
});

If the condition is true, the page title will be changed to "New Page Title".

Can I use jQuery to modify the page title of all browser tabs?

No, the document.title attribute can only change the title of the current document, that is, the title of the current browser tab.

Can I modify the page title without using jQuery?

Yes, it can be implemented using pure JavaScript:

document.title = "新的頁面標題";

Can I use jQuery to modify the page title when the page is loaded?

Yes, you can use jQuery's ready method:

$(document).ready(function(){
  document.title = "新的頁面標題";
});

Can I use jQuery to modify the page title when the button is clicked?

Yes, you can use jQuery's click method:

document.title = '新的標題';

When the user clicks on an element with id "button", the page title will be changed to "New Page Title".

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